Malicious PDF — malware analysis report

Static analysis result for SHA-256 64272071b452eac6…

MALICIOUS

PDF

49.2 KB Authoring application: Adobe PDF Library 9.0
MD5: de52136d10313dd687522ced6186f337 SHA-1: c8835cfff888c15557b9a60169579a55d1295d76 SHA-256: 64272071b452eac6cc75fd0c863094c2b9de1d8e3833f5d00f6a35bfe4319a26
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm with multiple URLs pointing to other PDF files, disguised as a download for a game. This is indicative of a phishing or malware distribution scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment, suggesting a phishing or traffic redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mustexclusive.weebly.com/uploads/1/3/0/5/130539408/rodatu.pdf
    • http://milkers-gloves.com/uploads/1/3/0/4/130483736/jazojedogusid.pdf
    • http://21stcenturyink.com/uploads/1/3/0/5/130546076/7878362.pdf
    • http://jatovulu.sultantec.com/uploads/2020/01/28/5558810.pdf
    • http://btmamusic.com/uploads/1/3/0/4/130435561/2373118.pdf
    • http://boltontrailscommittee.org/uploads/1/3/0/3/130323227/130323227.html#download+gangstar+rio+city+of+saints
    • http://linux.thai.net/projects/fonts-tlwg
    • http://www.thaitux.info
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000109f.bin
a378db245d5a551e76351200db645ed5f1dae2ba8dd1e3f5f42d05447c0f580b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F 8352 bytes
font_01_sfnt_off00006181.bin
fd5f80c928a41697f05a8a9d996a29eb187ea710f31dd7faa306f8bad5585866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 11444 bytes
font_02_sfnt_off00007a50.bin
5e910854bb8e7f04cc2e7e1440f7935443ca8acc30afafb7c21a302675d2794e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 16100 bytes

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